07-20-2012, 06:13 PM
Mark, in my limited time on radios and tube testers, the following is what I have found.
1. A tube that tests "good" is PROBABLY good.
2. A tube that test weak, is PROBABLY good.
3. A tube that tests shorted or dead, has a high certainty of being bad.
Please note the "PROBABLY". The best test is to replace with a known tube, but then again, make certain that tube works in another radio. Oscillator tubes can be particularly problematic on a tube tester.
Jerry
1. A tube that tests "good" is PROBABLY good.
2. A tube that test weak, is PROBABLY good.
3. A tube that tests shorted or dead, has a high certainty of being bad.
Please note the "PROBABLY". The best test is to replace with a known tube, but then again, make certain that tube works in another radio. Oscillator tubes can be particularly problematic on a tube tester.
Jerry
A friend in need is a pest! Bill Slee ca 1970.
